From patchwork Wed Jan 8 11:27:15 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 13930617 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2894DE77188 for ; Wed, 8 Jan 2025 11:35:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=kgcylRRYJsNedW0koD8ZuvQcDQjm34FST38niEDoveU=; b=VXCr5a7h5lKECtSozTsrfeow75 E6hHQLvmXOeVzashQKYf6WW9424yHJgGcLLCySizFSyutqmvedyKCa2PRyRRR7yGEfi5rBU7H6y3M ZDR7p/MJ6Q81btN/41xuWndqYY9EUbsfZYiWglLQN7QSSF9RmznJUw24trDKlIAibQZGEFEkho4+g j9Q1s06E7wvI9dRh0/RhYSsEK4svdAnX3VoLX8LskyzByoFUu23F9MlNExMOzmT9uZ5X4Ht3hBDrf DGcgdEPZDH8VxwhCzldMZqkqE5/QSNShCMEfKW6qjjEpal91soh8aqP1bCJZ1pVOInjmQ5BgcKC9+ g3ejO5zg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tVULP-00000008EmB-0kB3; Wed, 08 Jan 2025 11:35:27 +0000 Received: from bali.collaboradmins.com ([148.251.105.195]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tVUEJ-00000008CDA-0srv; Wed, 08 Jan 2025 11:28:14 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1736335685; bh=n8jBMOmRPbZ40aYw8sBrjQsu20/oRh/EVGeGUvgW1WE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=W0MUS4EHsubEr58QMhF6NGoYVIjUUFd86PtAwyd7fWWbw/wMiapTkwDVuiC1QIfU6 jd1Qj9BIb5zXRN06BJMFusSu+JejAORtPhyrqb2PMW8tRP/aiLtzUCURvl0CFLxMeK AQVHxvZgNTWbfhQ2Dh2MMrbea834s5vE/C2/FAYerdR1YpG3JR/yJ5XDwT4MB6oJaE lHT8Al7g0yJKCr5du4womaht23gjjhvJdFM+UPXNQ6yTdPouRrwOoioYsEUyauArXp ylnCzhYY5Bfm9AfMStRKVdDSgKnqI2WnkcXtGuTY6TTRXKOcBJN61OsJrnKxyEYP97 F81yitzQNWS2g== Received: from IcarusMOD.eternityproject.eu (2-237-20-237.ip236.fastwebnet.it [2.237.20.237]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id 9164517E1570; Wed, 8 Jan 2025 12:28:04 +0100 (CET) From: AngeloGioacchino Del Regno To: chunkuang.hu@kernel.org Cc: p.zabel@pengutronix.de, airlied@gmail.com, simona@ffwll.ch, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, ck.hu@mediatek.com, jitao.shi@mediatek.com, jie.qiu@mediatek.com, junzhi.zhao@mediatek.com, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@collabora.com, dmitry.baryshkov@linaro.org, lewis.liao@mediatek.com, ives.chenjh@mediatek.com, tommyyl.chen@mediatek.com, jason-jh.lin@mediatek.com Subject: [PATCH v4 05/34] drm/mediatek: mtk_dpi: Add checks for reg_h_fre_con existence Date: Wed, 8 Jan 2025 12:27:15 +0100 Message-ID: <20250108112744.64686-6-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20250108112744.64686-1-angelogioacchino.delregno@collabora.com> References: <20250108112744.64686-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250108_032812_808841_68959877 X-CRM114-Status: GOOD ( 13.28 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org In preparation for adding support for newer DPI instances which do support direct-pin but do not have any H_FRE_CON register, like the one found in MT8195 and MT8188, add a branch to check if the reg_h_fre_con variable was declared in the mtk_dpi_conf structure for the probed SoC DPI version. As a note, this is useful specifically only for cases in which the support_direct_pin variable is true, so mt8195-dpintf is not affected by any issue. Reviewed-by: CK Hu Signed-off-by: AngeloGioacchino Del Regno --- drivers/gpu/drm/mediatek/mtk_dpi.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c index f931baf9c3fa..ed9849ad3e79 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -430,12 +430,13 @@ static void mtk_dpi_config_swap_input(struct mtk_dpi *dpi, bool enable) static void mtk_dpi_config_2n_h_fre(struct mtk_dpi *dpi) { - mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, H_FRE_2N, H_FRE_2N); + if (dpi->conf->reg_h_fre_con) + mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, H_FRE_2N, H_FRE_2N); } static void mtk_dpi_config_disable_edge(struct mtk_dpi *dpi) { - if (dpi->conf->edge_sel_en) + if (dpi->conf->edge_sel_en && dpi->conf->reg_h_fre_con) mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, 0, EDGE_SEL_EN); }